<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>三行五列表格</title>
    </title>
</head>

<body>
    <table border="1">
        <caption>三行五列</caption>
        <thead>
            <tr>
                <th>1</th>
                <th>1</th>
                <th>1</th>
            </tr>
            <tr>
                <th>2</th>
                <th>2</th>
                <th>2</th>
            </tr>
            <tr>
                <th>2</th>
                <th>2</th>
                <th>2</th>
            </tr>
            <tr>
                <th>2</th>
                <th>2</th>
                <th>2</th>
            </tr>
            <tr>
                <th>2</th>
                <th>2</th>
                <th>2</th>
            </tr>
        </thead>
    </table>
</body>

</html>